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node_modules/core-js/modules/es.string.split.js

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+'use strict';
+var apply = require('../internals/function-apply');
+var call = require('../internals/function-call');
+var uncurryThis = require('../internals/function-uncurry-this');
+var fixRegExpWellKnownSymbolLogic = require('../internals/fix-regexp-well-known-symbol-logic');
+var anObject = require('../internals/an-object');
+var isNullOrUndefined = require('../internals/is-null-or-undefined');
+var isRegExp = require('../internals/is-regexp');
+var requireObjectCoercible = require('../internals/require-object-coercible');
+var speciesConstructor = require('../internals/species-constructor');
+var advanceStringIndex = require('../internals/advance-string-index');
+var toLength = require('../internals/to-length');
+var toString = require('../internals/to-string');
+var getMethod = require('../internals/get-method');
+var arraySlice = require('../internals/array-slice-simple');
+var callRegExpExec = require('../internals/regexp-exec-abstract');
+var regexpExec = require('../internals/regexp-exec');
+var stickyHelpers = require('../internals/regexp-sticky-helpers');
+var fails = require('../internals/fails');
+
+var UNSUPPORTED_Y = stickyHelpers.UNSUPPORTED_Y;
+var MAX_UINT32 = 0xFFFFFFFF;
+var min = Math.min;
+var $push = [].push;
+var exec = uncurryThis(/./.exec);
+var push = uncurryThis($push);
+var stringSlice = uncurryThis(''.slice);
+
+// Chrome 51 has a buggy "split" implementation when RegExp#exec !== nativeExec
+// Weex JS has frozen built-in prototypes, so use try / catch wrapper
+var SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails(function () {
+  // eslint-disable-next-line regexp/no-empty-group -- required for testing
+  var re = /(?:)/;
+  var originalExec = re.exec;
+  re.exec = function () { return originalExec.apply(this, arguments); };
+  var result = 'ab'.split(re);
+  return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';
+});
+
+// @@split logic
+fixRegExpWellKnownSymbolLogic('split', function (SPLIT, nativeSplit, maybeCallNative) {
+  var internalSplit;
+  if (
+    'abbc'.split(/(b)*/)[1] == 'c' ||
+    // eslint-disable-next-line regexp/no-empty-group -- required for testing
+    'test'.split(/(?:)/, -1).length != 4 ||
+    'ab'.split(/(?:ab)*/).length != 2 ||
+    '.'.split(/(.?)(.?)/).length != 4 ||
+    // eslint-disable-next-line regexp/no-empty-capturing-group, regexp/no-empty-group -- required for testing
+    '.'.split(/()()/).length > 1 ||
+    ''.split(/.?/).length
+  ) {
+    // based on es5-shim implementation, need to rework it
+    internalSplit = function (separator, limit) {
+      var string = toString(requireObjectCoercible(this));
+      var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
+      if (lim === 0) return [];
+      if (separator === undefined) return [string];
+      // If `separator` is not a regex, use native split
+      if (!isRegExp(separator)) {
+        return call(nativeSplit, string, separator, lim);
+      }
+      var output = [];
+      var flags = (separator.ignoreCase ? 'i' : '') +
+                  (separator.multiline ? 'm' : '') +
+                  (separator.unicode ? 'u' : '') +
+                  (separator.sticky ? 'y' : '');
+      var lastLastIndex = 0;
+      // Make `global` and avoid `lastIndex` issues by working with a copy
+      var separatorCopy = new RegExp(separator.source, flags + 'g');
+      var match, lastIndex, lastLength;
+      while (match = call(regexpExec, separatorCopy, string)) {
+        lastIndex = separatorCopy.lastIndex;
+        if (lastIndex > lastLastIndex) {
+          push(output, stringSlice(string, lastLastIndex, match.index));
+          if (match.length > 1 && match.index < string.length) apply($push, output, arraySlice(match, 1));
+          lastLength = match[0].length;
+          lastLastIndex = lastIndex;
+          if (output.length >= lim) break;
+        }
+        if (separatorCopy.lastIndex === match.index) separatorCopy.lastIndex++; // Avoid an infinite loop
+      }
+      if (lastLastIndex === string.length) {
+        if (lastLength || !exec(separatorCopy, '')) push(output, '');
+      } else push(output, stringSlice(string, lastLastIndex));
+      return output.length > lim ? arraySlice(output, 0, lim) : output;
+    };
+  // Chakra, V8
+  } else if ('0'.split(undefined, 0).length) {
+    internalSplit = function (separator, limit) {
+      return separator === undefined && limit === 0 ? [] : call(nativeSplit, this, separator, limit);
+    };
+  } else internalSplit = nativeSplit;
+
+  return [
+    // `String.prototype.split` method
+    // https://tc39.es/ecma262/#sec-string.prototype.split
+    function split(separator, limit) {
+      var O = requireObjectCoercible(this);
+      var splitter = isNullOrUndefined(separator) ? undefined : getMethod(separator, SPLIT);
+      return splitter
+        ? call(splitter, separator, O, limit)
+        : call(internalSplit, toString(O), separator, limit);
+    },
+    // `RegExp.prototype[@@split]` method
+    // https://tc39.es/ecma262/#sec-regexp.prototype-@@split
+    //
+    // NOTE: This cannot be properly polyfilled in engines that don't support
+    // the 'y' flag.
+    function (string, limit) {
+      var rx = anObject(this);
+      var S = toString(string);
+      var res = maybeCallNative(internalSplit, rx, S, limit, internalSplit !== nativeSplit);
+
+      if (res.done) return res.value;
+
+      var C = speciesConstructor(rx, RegExp);
+
+      var unicodeMatching = rx.unicode;
+      var flags = (rx.ignoreCase ? 'i' : '') +
+                  (rx.multiline ? 'm' : '') +
+                  (rx.unicode ? 'u' : '') +
+                  (UNSUPPORTED_Y ? 'g' : 'y');
+
+      // ^(? + rx + ) is needed, in combination with some S slicing, to
+      // simulate the 'y' flag.
+      var splitter = new C(UNSUPPORTED_Y ? '^(?:' + rx.source + ')' : rx, flags);
+      var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
+      if (lim === 0) return [];
+      if (S.length === 0) return callRegExpExec(splitter, S) === null ? [S] : [];
+      var p = 0;
+      var q = 0;
+      var A = [];
+      while (q < S.length) {
+        splitter.lastIndex = UNSUPPORTED_Y ? 0 : q;
+        var z = callRegExpExec(splitter, UNSUPPORTED_Y ? stringSlice(S, q) : S);
+        var e;
+        if (
+          z === null ||
+          (e = min(toLength(splitter.lastIndex + (UNSUPPORTED_Y ? q : 0)), S.length)) === p
+        ) {
+          q = advanceStringIndex(S, q, unicodeMatching);
+        } else {
+          push(A, stringSlice(S, p, q));
+          if (A.length === lim) return A;
+          for (var i = 1; i <= z.length - 1; i++) {
+            push(A, z[i]);
+            if (A.length === lim) return A;
+          }
+          q = p = e;
+        }
+      }
+      push(A, stringSlice(S, p));
+      return A;
+    }
+  ];
+}, !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC, UNSUPPORTED_Y);